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  1. › wiki › SleepSleep - Wikipedia

    18 hours ago · During a night's sleep, a small amount of time is usually spent in a waking state. As measured by electroencephalography, young females are awake for 0–1% of the larger sleeping period; young males are awake for 0–2%. In adults, wakefulness increases, especially in later cycles.

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  3. › wiki › BetelgeuseBetelgeuse - Wikipedia

    18 hours ago · Betelgeuse is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in the constellation of Orion. It is a distinctly reddish semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, has the widest range displayed by any first-magnitude star. At near-infrared wavelengths, Betelgeuse ...

    • +1.85
    • 548+90, −49 ly, (168.1+27.5, −14.9 pc)
  4. 1 day ago · A billionaire makes a six-year journey to the Barnard's Star system to open a wormhole in 2049. Marooned on Eden (1993), novel by Robert L. Forward with Margaret Dodson Forward. The starship Prometheus takes a crew on a 40-year mission to Zuni, an inhabitable moon orbiting the planet Gargantua of Barnard's Star.

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